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Better fix for bug #35927 (missing refragmentaion in ip_forward) when IP_FRAG is disabled.

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This commit is contained in:
goldsimon 2012-03-25 15:12:42 +02:00
parent d910786034
commit c622985fda
1 changed files with 4 additions and 4 deletions
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8
src/core/ipv4/ip4.c
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@ -255,17 +255,17 @@ ip_forward(struct pbuf *p, struct ip_hdr *iphdr, struct netif *inp)
PERF_STOP("ip_forward");
/* don't fragment if interface has mtu set to 0 [loopif] */
if (netif->mtu && (p->tot_len > netif->mtu)) {
#if IP_FRAG
if ((IPH_OFFSET(iphdr) & PP_NTOHS(IP_DF)) == 0) {
#if IP_FRAG
ip_frag(p, netif, ip_current_dest_addr());
#else /* IP_FRAG */
/* @todo: send ICMP Destination Unreacheable code 13 "Communication administratively prohibited"? */
#endif /* IP_FRAG */
} else {
/* send ICMP Destination Unreacheable code 4: "Fragmentation Needed and DF Set" */
icmp_dest_unreach(p, ICMP_DUR_FRAG);
}
return;
#else /* IP_FRAG */
/* @todo: send ICMP Destination Unreacheable code 13 "Communication administratively prohibited"? */
#endif /* IP_FRAG */
}
/* transmit pbuf on chosen interface */
netif->output(netif, p, ip_current_dest_addr());